70th SWCS International Annual Conference July 26-29, 2015 Greensboro, NC

1. Soil& Water Conservation Society
2015 International Conference
Greensboro, North Carolina
July 28, 2015
Restoring Hydrological Function on Landscapes
Through the Removal of Western Juniper
Study Conducted in Lassen County, California, USA
Eileen Carey
Ecologist
1018 Boulder Mountain Court
South Lake Tahoe, CA 96150
(916) 761-1535
eileenvcarey@yahoo.com
Thomas W. Esgate
Project Director,
Certified Conservation Planner for USDA programs
18888 Meadowlark Court
Penn Valley, CA 95946
(530) 310-0146
twesgate@sbcglobal.net
1

3. Water inflow = water outflow ± storage.

4. Control Area
June 2013 June 2014

5. Treatment Area
June 2013 June 2014

7. Stem Density by Species and Diameter Class for Control and Treatment Areas
at Ash Valley Ranch 2013.
0
10
20
30
40
50
60
70
80
0-5 5-10 10-15 15-20
Treesperacre
Diameter Class (inches)
Control Area
0
10
20
30
40
50
60
70
80
0-5 5-10 10-15 15-20
Diameter Class (inches)
Treatment Area
Jeffrey pine Western juniper

8. 0.000
0.100
0.200
0.300
0.400
0
5
10
15
20
25
30
Precipitation Treatment 12" depth Control 12" depth
0.000
0.100
0.200
0.300
0.400
0
5
10
15
20
25
30
Precipitation Treatment 6" depth Control 6" depth
SoilVolumetricWaterContent(m3/m3)
CumulativePrecipitation(in)

9. 0.000
0.100
0.200
0.300
0.400
0
5
10
15
20
25
30
Precipitation Treatment 12" depth Control 12" depth
0.000
0.100
0.200
0.300
0.400
0
5
10
15
20
25
30
Precipitation Treatment 6" depth Control 6" depth
SoilVolumetricWaterContent(m3/m3)
CumulativePrecipitation(in)
[

10. 0
0.5
1
1.5
2
2.5
3
3.5
4
0
5
10
15
20
25
5/1/2013
6/1/2013
7/1/2013
8/1/2013
9/1/2013
10/1/2013
11/1/2013
12/1/2013
1/1/2014
2/1/2014
3/1/2014
4/1/2014
5/1/2014
6/1/2014
7/1/2014
8/1/2014
9/1/2014
CumulativeDrainage(in)
CumulativePrecipitation(in)
Precipitation Treatment Control
Cumulative Drainage was Greater in the Treatment Area